389523 has 4 divisors (see below), whose sum is σ = 519368. Its totient is φ = 259680.

The previous prime is 389513. The next prime is 389527. The reversal of 389523 is 325983.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 389523 - 2⁴ = 389507 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64918 + ... + 64923.

It is an arithmetic number, because the mean of its divisors is an integer number (129842).

2³⁸⁹⁵²³ is an apocalyptic number.

389523 is a deficient number, since it is larger than the sum of its proper divisors (129845).

389523 is a wasteful number, since it uses less digits than its factorization.

389523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129844.

The product of its digits is 6480, while the sum is 30.

The square root of 389523 is about 624.1177773466. The cubic root of 389523 is about 73.0316370033.

The spelling of 389523 in words is "three hundred eighty-nine thousand, five hundred twenty-three".